Nissan Versa (N17): P1148 closed loop control

DTC Logic

DTC DETECTION LOGIC

NOTE: DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause
P1148 CLOSED LOOP-B1 (Closed loop control function) The closed loop control function does not operate even when vehicle is being driven in the specified condition.
  • Harness or connectors (A/F sensor 1 circuit is open or shorted.)
  • A/F sensor 1
  • A/F sensor 1 heater

Diagnosis Procedure

DTC P1148 is displayed with DTC for A/F sensor 1.

When the DTC is detected, perform the trouble diagnosis of DTC corresponding to A/F sensor 1.

Refer to EC, "DTC Index".

Other materials:

Key interlock cable
Exploded View 1. A/T shift selector assembly 2. Key interlock cable A: Key cylinder B: Lock plate C: Clip Removal and Installation CAUTION: Always apply the parking brake before performing removal and installation. REMOVAL Move the shift selector to the "N" position. Remove the s ...

Rear RH
REAR RH : Component Function Check 1.CHECK FUNCTION Select DOOR LOCK of BCM using CONSULT. Select DOOR LOCK in ACTIVE TEST mode. Touch ALL LOCK or ALL UNLK to check that it works normally. Is the inspection result normal? YES >> Door lock actuator is OK. NO >> Refer to DL ...

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